I was honestly a bit nervous ordering a replacement battery online, but I'm really glad I did! It showed up right on time, within 5 days just as promised, and the packaging was solid, everything arrived perfectly intact.
What surprised me most is that the battery seems to be an updated version compared to what I expected. There's a new connector on the front motor cable that looks like it adds some protection against electrical faults, a small detail, but it shows they actually care about improving the product. Love that.
I've been riding my Kukirin G2 Master daily since it arrived on February 20th, and as of today March 2nd, everything runs like a dream. Smooth, reliable, no issues whatsoever.
Definitely 5 stars, would buy again without hesitation!...if needed, i hope really not ... : - )